Telephone system and apparatus



J. O. CADIEUX TELEPHONE SYSTEM AND APPARATUS April 25-, 1933.

Filed June 20, 1930 5 Sheets-Sheet 1 April 25, 1933.

Filed June 20, 1950 5 Sheets-Sheet 2 April 25, J. o. CADIEUX TELEPHONE SYSTEM AND APPARATUS Filed June 20, 1930 SSheets-Sheet llllh Mill 22 April 25, 1933,

v J. o. CADIEUX TELEPHONE SYSTEM AND APPARATUS Filed June 20, 1950 5 Shets-Sheet 5 fiezl 1 I 26 IE isax 35 L 2 l W 37 7 mr T 36' 9.9 32

q: M v 35 2 Fllllr v gwuemko o Jo say 0. 'adzaz,

Patented Apr. 25, 1933 UNITED STATES PATENT OFFICE JOSEPH 0. CADIEUX, 0F MERIDEN, CONNECTICUT, ASSIGNOR TO CONNECTICUT TELE- PHONE & ELECTRIC CORPORATION, OF MERIDEN, CONNECTICUT, A CORPORATION OF DELAWARE Application filed June 20,

My invention relates particularly to installations for use in motor vehicles.

One object is to provide an audible and a visual signal from the same point.

Another object is to provide a compact and convenient loud speaker construction which can be readily installed in telephone and lighting systems.

Another object is the construction of a combined loud speaker and dome light.

Another object is to provide a compact combination telephone transmitter and receiver.

Another object is to provide an eflicient and compact loud speaker instrument adapted to be installed in a motor car.

Another object is to provide a convenient means for communication between the occupant or passenger of a car and the driver.

The accompanying drawings show details of some forms of the invention with circuit diagrams for various installations.

Fig. 1 is a side view of a vehicle with portions broken away to show a dome light and loud speaker in the front and a telephone transmitter in the rear according to my invention.

Fig. 2 is a similar view showing also a transmitter in front and a combination receiver and transmitter in the rear.

Fig. 3 is a section and side View of a combination transmitter and receiver.

Fig. 4 is a sectional viewiof a combination dome light and loud speaker involving my invention.

Fig. 5 is a section on the plane of the line 55 of Fig. 4 looking upwardly.

Fig. 6 is a similar section on the plane of the line 66.

Fig. 7 is a fragmentary section of the loud speaker shell with an interrupter.

Fig. 8 is a diagram showing a one-way talking system employing the front dome light, loud speaker and rear transmitter with lighting or signal switches front and rear.

Fig. 9 is a similar diagram with an added front transmitter and a rear receiver for twoway talking.

' Fig. 10 is another diagram similar to Fig. 8 but with an interrupter and switch con- TELECPHONE SYSTEM AND APPARATUS 1930. Serial No. 462,552.

nected for using the loud speaker as a buzzer signal.

' Fig. 11 is a circuit for two-way conversation as in Fig. 9 and an interrupter and switch for using the loud speaker as a buzzer signal.

Fig. 12 is a one-way talking circuit similar to that of Fig. 10 but with a separate buzzer signal circuit. I

Fig. 13 is a two-way talking circuit similar to Fig. 9 with a separate buzzer signal circuit added.

Fig. 14 is a two-way talking circuit with front and rear signal lights and switches.

Fig. 15 is a circuit similar to Fig. 14 with signal switches and interrupters connected to use the receiver and loud speaker as buzzer signals.

Fig. 16 is a cross sectional view of a modified form of diaphragm and support.

The diagrams show various installation systems especially intended for motor vehicles although it will be obvious that broadly considered the apparatus might be installed and used for other purposes. I have used similar reference letters in the various figures to denote the same mechanisms or their equivalents. For instance, in Fig. 8 the installation includes a transmitter 20 which may be located in the tonneau or rear of a car, a loud speaker with an actuating coil 21 which may be located in front over the drivers seat, a battery 22 which may be the usual storage battery of the car, a switch 23 which may be conveniently in the form of a hook switch which is open-circuited when the transmitter is hung upon it, a lamp bulb 24 associated with a loud speaker, and two switches 25 and 26 located in the front and rear of the car respectively for controlling the light circuit.

The battery, loud speaker and light circuits may be grounded as shown or of an ordinary two-wire type. When the switch 23 is closed the person in the rear may talk to the person in the front through the circuit including the battery 22, switch 23, transmitter 20 and loud speaker 21. In case the passenger wishes to attract the attention of be such as to drown the sound of the loud speaker, he may signal by flashing the light 24, using the switch 26 for this purpose. The switch 26 is preferably a two-way switch so that when the parts are in aposition shown in Fig. 8 the circuit may be closed through the battery 22, switch 26 with the upper contacts closed, and the lamp 24.

In case the switch 25 has been closed to light the lamp 24, operation of the switch 26 w1ll alternately open and close the circuit,

thus flashing a signal to the driver.

In the circuit of Fig. 9 I have shown in addition to the arrangement of Fig. 8 a transmitter 27 in the front and a receiver 28 in the rear arranged so that the driver may also communicate with the passenger.

In the circuit arrangement of Fig. 10 I have provided an interrupter 29 in the circuit with a switch member 30 so that the passenger can close the switch 30 in the circuit through the interrupter and the loud speaker and thus use the loud speaker as a buzzer for producing a distinctive signaling sound to v attract the attention'of the driver in case the lamp signal should be ineffective and in case the talking signal is inoperative or not noticed, or for any other reason.

In Fig. 11 I have shown the circuit arrangement similar to that of Fig. 10 but with the addition of the transmitter 27 and receiver 28. Thisprovides not onl two wire" telephone communication but a light signal as well as a buzzer signal with controlling switches.

The arrangement of Fig. 12 is similar to that of Fig. 10 but a separate buzzer 31 is connected in circuit with the switch 30 so that a distinctive and independent signal may be sent without interfering with the.

talking circuit thru the loud speaker,

In the arrangement of F ig. 13 I provide a combination of the advantages of the twoway talking circuit of'Figr9 together with the independent buzzer circuit of Fig. 12.

In the arrangement shown in Fig. 14 I have provided-the two-way talking circuit above described in the rear with switches 33 and 34 for controlling the rear lamp circuit in a manner similar to the switches 26 and 25 of Fig. 8. This lamp 32 may be of any suitable type and in fact this arrangement might embody a loud speaking receiver with the light similar to the combination of loud speaker 21 and lamp 24 previously mentioned as used over the front seat.

In the circuit arrangement of Fig. 15 I have shown the combination of Fig. 14 towhen the hook is up.

. The loud speaker construction is illustrated in detail in Fig. 4- and shown as installed in Figs. 1 and 2. The casing or shell 40 supports the coil and its support which constitutes the power element of the loud speaker 21 near its center. The casing is of a flaring type and provided With a flange or rim 41 which is adapted to be secured by screws 42 to the roof of the car or other support. A ring 43 also supported by the screws 42 serves to support a dome-like glass 44 in any suitable manner. The diaphragm 45 which constitutes the sound propagating member has a core 46 secured around the center and coacting electromagnetically with the stationary part of the loud speaker device. This diaphragm may be made in various ways. In the form shown in Fi 4 the outer rim of the diaphragm is secure to the flange 41 of the casingand may be gripped by yielding washers 47. The ring 43 is preferably provided with a series of openings 48 for the emission of sound Waves and these openings may be covered by a screen 49 to keep out insects, etc.

The lamp socket 50 may be of any suitable type to accommodate the lamp bulb in the center of the loud speaker whose diaphragm thus servesas a reflector for the light of the lamp.

In some cases it may be desirable to provide a sound deflecting member 51 to deflect the sound wave from the diaphragm 45 upwardly through the openings 48.

The loud speaker-lamp construction is preferably self contained to facilitate installation and the casing 40 is preferably designed to protect the lamp and keep out water from the coil and diaphragm. It may also have openings 48' to prevent air compression behind the diaphragm.

The transmitter 27 may convenientl be gounted upon the steering wheel as shown in In the construction shown in Fig. 16 the diaphragm '45 is shown corrugated so as to permit the necessary vibratory movement and the outer edge of the diaphragm in this case may be clamped rigidly.

Fig. 3-shows a convenient form of hand instrument embodying the combination of a receiver and transmitter in which. the-body 52 of the instrument is formed of molded insulation with chambers on opposite sides of the center to accommodate the transmitter reoaeie and 54. An extension mouth piece 55 serves to conduct the sound vibration to the transmitter diaphragm and thus to actuate the microphone or other transmitting mechanism. The horn serves as a convenient handle and may be provided with a push button switch 56 for controlling the talking or signaling circuits.

The method of operation of the system of apparatus above described will be apparent from the description and the drawings and it should be understood that I do not intend to limit my claims to the forms or combinations described except as the same may be required by the terms of the claims.

I claim:

1. A combination lam and loud speaker comprising a casing having an outer flange adapted to be secured to the roof of a car, a lamp socket mounted therein, a conical diaphragm having a rim, a glass, and a frame supporting the glass and the rim of the diaphragm in the casing and a magnetic system adjacent the socket consisting of a coil and a core for actuating the diaphragm.

2. A combination dome light and loud speaker comprising a casing adapted to be supported in the ceiling of a car, alamp socket mounted therein, a coil about the socket, a diaphragm having a core coacting with the coil and having a rim, and a frame supporting the rim of the diaphragm on the casing.

3. A combination lamp and loud speaker comprising a casing, a lamp socket mounted therein, a coil concentric with the socket, a diaphragm having a core coacting with the coil and having a rim, a glass, and a frame supporting the glass and the rim of the diaphragm.

4. A loud speaker comprising a protecting housing having a rim and adapted to be mounted in the top of a car and having an air outlet and supporting screws arranged around the rim of the housing, a lamp socket supported in the housing, a diaphragm having an outer rim supported by the rim of said housings, an electromagnetic system for vibrating the diaphragm and a dome light glass supported by the rim of the housing beneath the lamp socket.

'5. A combination lamp and loud speaker comprising a casing having a periphery flange adapted to be secured to the roof of a car, a lamp socket having a lamp mounted therein, a glass, a diaphragm capable of reflecting light rays from said lamp and having a rim, a frame supporting the glass and the rim of the diaphragm in the casing and a magnetic system adjacent the socket consisting of a coil and a core for actuating the diaphragm.

6. A loud speaker comprising a rotecting housing having a rim adapted to be secured in the top of a car, a lamp socket containing a lamp supported in the housing, a diaphragm capable of reflecting light rays from said lamp having a central magnetic core and having an outer rim supported by the rim of said housing, an electro-magnetic system for vibrating the diaphragm and consisting of a coil surrounding the core of said diaphragm and a dome light glass supported by the rim of the housing beneath the lamp socket.

JOSEPH U. CADIEUX. 

